tools/aapt2/util/Utf8Iterator_test.cpp

/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "util/Utf8Iterator.h"

#include "test/Test.h"

using ::testing::Eq;

namespace aapt {

TEST(Utf8IteratorTest, IteratesOverAscii) {
  Utf8Iterator iter("hello");

  ASSERT_TRUE(iter.HasNext());
  EXPECT_THAT(iter.Next(), Eq(U'h'));

  ASSERT_TRUE(iter.HasNext());
  EXPECT_THAT(iter.Next(), Eq(U'e'));

  ASSERT_TRUE(iter.HasNext());
  EXPECT_THAT(iter.Next(), Eq(U'l'));

  ASSERT_TRUE(iter.HasNext());
  EXPECT_THAT(iter.Next(), Eq(U'l'));

  ASSERT_TRUE(iter.HasNext());
  EXPECT_THAT(iter.Next(), Eq(U'o'));

  EXPECT_FALSE(iter.HasNext());
}

TEST(Utf8IteratorTest, IteratesOverUnicode) {
  Utf8Iterator iter("Hi there 華勵蓮🍩");
  iter.Skip(9);

  ASSERT_TRUE(iter.HasNext());
  EXPECT_THAT(iter.Next(), Eq(U'華'));

  ASSERT_TRUE(iter.HasNext());
  EXPECT_THAT(iter.Next(), Eq(U'勵'));

  ASSERT_TRUE(iter.HasNext());
  EXPECT_THAT(iter.Next(), Eq(U'蓮'));

  ASSERT_TRUE(iter.HasNext());
  EXPECT_THAT(iter.Next(), Eq(U'🍩'));

  EXPECT_FALSE(iter.HasNext());
}

}  // namespace aapt